Tinker bell came to our room when we got back if we were good listeners at the park. It was amazing and worked so well. I had hit up the dollar store and the target clearance sections and bought a lot of good Disney stuff. She absolutely loved getting a little surprise and never asked for anything in the parks.
I also brought glow sticks and light up wands I got for a dollar and gave some to her nightly when it got dark. It was a huge money saver and a good bribe too.